Roller-box for shaft-hangers



(No Model.)

J W HYATT ROLLER BOX'FOR SHAFT HANGERS.

Patented Nov. 8, 1892 57; Z01? J aw, arm f I UNITED STATES JOHN \V. HYATT, OF NElVARK, NE\V JERSEY.

ROLLER-BOX FOR SHAFT-HANGERS.

SPECIFICATION forming part of Letters Patent No. 485,938, dated November 8, 1892.

Application filed May 1'7, 1892. $erial No. 438,382. (No model.)

represented in the following specification and the accompanying drawings, forming a part: of the same.

The object of this invention is to furnish a convenient means for applying antifrictioir' roll bearings to the shafting-hangers which are already in general use and which afford in most instances a very contracted space for the admission of the j ournal-box. For applying antifriction-rolls to such bearings I have devised a journal-box with a contracted waist adapted to fit between the vertical guides which are ordinarily provided in the bottom of a shafting-hanger, and I form each end of the box with an enlarged cylindrical chamber adapted to receive suitable antifriction-rolls.

The contracted waist is formed with a clearance-passage through which the shaft may be inserted, and the rolls and roll-chambers are. constructed to hold the shaft in the center of such clearance-space. The shaft when rotating in the box is thus sustained wholly by the antifriction-rolls and is supported without the necessity for any lubrication. To facilitate theintroduction of the rolls or their examination in the roll-chambers without removing the box from the hanger, the end of the box is closed with a removable cover, which is preferably formed of adisk of thin metal fitted into a cylindrical groove near the end of m the roll-chamber.

The invention will be understood by reference to the annexed drawings, in which Figure 1 is an end view of ahanger with the journal-box shown in cross-section through the Waist at one side of the center line. Fig. 2 is a side view of the hanger with the hanger and journal-box shown in section at the center line where hatched. Fig. 3 is an end view of one of the removable covers; and Fig. 4 is a plan of i the lower half of the journal-box with the covers shown in place, both covers being shown in section at the center line.

A is the foot of the hanger, and B the legs united byafixed cross-bar C. The legs below the cross-bar form vertical guides e, and a removable cross-bar Dis attached to the lower end of the legs in the usual manner by bolts f and nuts g. Set -screws h are inserted through the cross-bars to clamp the top and bottom of the journal-box and to adjust the same vertically.

The box is formed with contractedwaist '6, having at its opposite ends the shells 7t k, which form enlarges cylindrical chambers j and is divided horizontally into top and bottom sections, (lettered k and 7c in Fig. 2,) which sections are provided with lugs Z, having dowels m fitted in the same to hold the sec tions in line.

Rolls n are shown fitted in the roll-chamber in three sets of seven each, being held in place solely by their flat sides and their contact with the ends of the chamber. The inner end of the chamber is formed by a fiat flange 0 upon each end of the waist and the outer end of the chamber is provided with an interior groove (1, adapted to receive a disk-like cover 19. Such cover is slit at one side at p, as shown in Fig. 3, and is thus adapted to spring over the shaftingin case the latter is already erected. The cover 13 is formed with holes in the middle a little larger than the shaft '8, which is shown in the box in Figs. 1 and 2, and is thus readily slipped endwise upon the shaft for application to or removable from the journal-box. The waist i, as shown in the section of the waist in Fig. 1, is made of the same dimensions and strength as the ordinary journal-box, which would be fitted between the guides e, and is thus held securely in place when inserted between the guides and the cross-bars O and D and clamped by the setscrews h.

In applying the jonrnahbox to the hanger before the shaft is inserted the rolls may be fitted within the chambers and secured therein by fitting the covers 1) into place, and the box may in its entirety be secured in the hanger and the shaft inserted through the same. To facilitate the insertion of the shaft, the set-screws h may be widely separated and the top 7t may be lifted somewhat from the bottom 7c of the box. The top and bottom of the box may also be fitted within the hanger and the shaft placed within the same with the covers 19 slipped upon the shaft, after which the rolls 01 may be readily inserted in the a little from the bottom.

open ends of the boxes and the covers inserted in thcir pla'ces.

Tofacilitate the fitting'of t'he'cover into the groove q, the top of the box. may be lifted It is not material how the rolls be held Within the box, and it is obvious that the outer end of the boxmay be formed integral with the shell k the same as the flange 0.

The arrangementof theloose rolls in several contiguous series within the box is claimed in my patent, No. 885,266,.datedJune 26, 1888; but other arrangements of antifriction-rolls may be used in. connectionvwithtmy journal-box for hangers, as the essential feature of the journal-box-consists in .thecontracted waist, with a clearance;passage tfor; theshaft, and provided. atzopposite ends-with, aenlarged cylindrical chambersv adapted=tore- ..ceive. antifriction-rolls. With'this construe-l 'tion the shaft is supported upontwosets of; :rolls and is practically sustained: bytwo. bear-l ings separated by the length. of the contracted waist. The shaft issthusv firmly secured, tandfas it .is free from contact .with any -sta-j tionary part of the bearing it'isadaptedto run without lubrication, and-may'thusbe p .erated for a long time withoutrequiring any attention.

iBythe peculiar form of -.the journal-box, with acontracted waist in themiddleand en-- .large'd cylindrical chambers atthe .ends,t1:am enabled to supply an 'antifrictionrroll'.b.eartingtoalmost any ordinary. hanger without making any change Whatever. in the hanger, .In constructing such an antifriction jcurnal box for. a hanger the -waist.is made .OfaSUitable width to fit between tl-1e.guides.e.and.of .suitable length to sustain-the flanges 0 and the shell 70 70 upon opposite sides of the .hanger-legs. The antifriction journal box .thusconstructed can then be substitutedfor the box previously in the hanger with very 'littlelabor,andthenfurnishesa corresponding support for the revolving shaft. vAshangers adapted-for a certain size of shaft :are com: monlymadeof the same dimensions bet-Ween the legs,it is obvious that-the antifriction-l {journal box-for a givenshaft'willbeadapted; Ito fita considerable variety-10f hangers .now in use.

'Ilheinventionis equally. useful inthe con-' struction of new hangers, as the contracted waist permits the application of large and, durable antifriction-rolls to the i hanger-box without enlarging .the .space ..bet-ween the. .guides e, which .-would,greatly increase the .width of the hanger and render it clumsy-and heavy in appearance.

.In the sectionof the-waist in..Fig. 1 it-Will benoticed thatthe ilowerhalf orbottom of thewaist is made with vertical sides exterinally,,,which prevent it .from :rotating be-. .tween the guides, while .the .top of the waist is made cylindrical :externally, which form, adapts itaforrinsertion between-theguide-and a shaftiin any case where the shafting and hangers are already erected and it is desired 'to apply the;roller-boxithereto. I' In such case the'top of the box is wholly separated from the bottom and is first applied in an inverted position to the shaft and then turned around ulponthesameintoitsn'ormalposition. (Shown in Fig.1.) .The bottom of the box is then inserted between the guides, and the cross-bar D is secured in itsplace by the nuts 9. In cases-where the shaft is already erected the slip p in the coverp permits the application of the covers to the shaft by twisting the edges adjacent to the notch a sufficient dislance apart to slip over the shaft until the latter is in the central hole The edges are then broughtinto contiguity, thus flattening the .coverand sadapting it v,toaslipinto the ,grooveg, .whioh is done .by.-sl,igl1tly separating the ,partskJc of the .shell. l'lheclamp- .ingpof the; partstogether; bythe-screw; h .then securesrthecovers rigidly in,place. .It-will be .noticed ,inJFig. 1 that while the contracted .waist is adaptcdttoifit between the, guidesin any ordinary hanger the cylindrical shells at the ends ,of .the box which contains the. rolls .n .are no greater 'in. diameter than the external-width of the hanger. .Theroller-box does .not. therefore appear of any greater dimensions than' the .hanger itself,even .if it be larger than the:hangerebox for-Which it is substituted.

.It is obviouslyimmaterial how the top and :bottom ofthe shell are held IILHHB with" one another, and boltsor other meansmay be iusedrin place of the dowels for. such purpose.

By provi'ding the :box .with .a contracted .Waist; havingenlarged cylindrical shells at its opposite ends LI .am-enaibledto use antifric- .tion-rolls of.- relatively-large diameter-Without enlanging the hanger, and thus securea more durable construction than-where zverysmall .rolls are used.

.-I.am .aware that antifriction-rolls :have .been i applied to hangers of ;novel construc- :tion; but I amnotawarethatany ,journalbearing has beenconstructed-With :antifric- .tionsrollsat-the opposite ends and provided witha waist adapted .toifitthe tguides-in an ordinary-hanger, so as to utilizethe :han-gers alread y extensively in usefforsupportingand 1. The combination, with a hanger having the guides e and the cross-bars C D, of the roller journal-box divided horizontally and having the contracted Waist '11 fitted to the guides e and provided at opposite ends with the enlarged cylindrical chambers j and antifriction-rolls, and the cross-bars having means for adjusting the box vertically between the guides, substantially as herein set forth.

2. The combination, with a hanger having the guides e and the cross-bars O D, of the roller journal-box divided horizontally and having the contracted waist i fitted to the guides e and having at opposite ends the enlarged cylindrical chambers provided with grooves q in their outer ends, and the removable covers 19, fitted in the grooves q and split at one side, and thereby adapted to spring over the shaft, as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN W. HYATT. Witnesses:

FRANK T. MORTON, THOMAS S. CRANE. 

